7S3 
JOURNAL OF MCOLTORAL RESEARCH 
Vol. XXIX Washington, D. C. July 1-December 15, 1924 
CONTENTS 
Segregation and Correlated Inheritance in Crosses Between Kota and 
Hard Federation Wheats for Rust and Drought Resistance. J. Allen 
Clark (3 plates; 9 text figures)_ 1 
Egg and First-Stage Larva of Tarsostenus univittatus (Rossi), a Beetle 
Predacious on Powder-Post Beetles. R. A. St. George (1 text figure)-- 49 
Pythium Rootlet Rot of Sweet Potatoes. L. L. Harter (1 text figure)-- 53 
Bacterial Pustule of Soybean. Frederick A. Wolf (3 plates; 3 text 
figures)_ 57 
The Chemical Examination of Various Peat Materials by Means of Food¬ 
stuff Analyses. A. P. Dachnowski_ 69 
Botrytis Rot of the Globe Artichoke. George K. K. Link, Glen B. 
Ramsey, and Alice A. Bailey (1 plate)_ 85 
The Depth Distribution of the Root-Knot Nematode, Heterodera radici- 
cola , in Florida Soils. G. H. Godfrey (5 text figures)_ 93 
Freezing Injury of Apples. H. C. Diehl and R. C. Wright (5 plates; 
12 text figures)_ 99 
Oiled Paper and Other Oiled Materials in the Control of Scald on Barrel 
Apples. Charles Brooks and J. S. Cooley__ 129 
The Greenhouse Leaf-Tyer, Phlyctaenia rubigalis (Guen6e) C. A. Weigel, 
B. M. Broadbent, August Busck, and Carl Heinrich (2 plates; 
3 text figures)___ 137 
A Leaf and Corm Disease of Gladioli Caused by Bacterium marginatum. 
Lucia McCulloch (5 plates; 1 text figure)_ 159 
New Termites and Hitherto Unknown Castes from the Canal Zone, 
Panama. Thos. E. Snyder (9 text figures; 2 plates)_ 179 
The Shape and Weight of Eggs in Relation to the Sex of Chicks in the 
Domestic Fowl. M. A. Jull and J. P. Quinn_ 195 
The Growing Season of Western Yellow Pine. G. A. Pearson (2 text 
figures)_ 203 
The Digestibility of Tepary Beans. Harry J. Deuel_ 205 
Stripe Rust (Puccinia glumarum ) of Cereals and Grasses in the United 
States. H. B. Humphrey, C. W. Hungerford, and A. G. Johnson (1 
plate; 5 text figures)_ 209 
A Study of Bacterial Pustule of Soybean, and a Comparison of Bad. 
phaseoli sojense Hedges with Bad. phaseoli EFS. Florence Hedges 
(7 plates)_ 229 
Vitamin A Content of Fresh Eggs. Joseph C. Murphy and D. Breese 
Jones (4 text figures)_ 253 
Some Insecticidal Properties of the Fatty Acid Series. E* H. Siegler and 
C. H. Popenoe_ 259 
Infection of Barley by Ustilago nuda through Seed Inoculation. W. H. 
Tisdale and V. F. Tapke (9 plates)_ 263 
The Effect of Feeding Thyroid on the Plumage of the Fowl. L. J. Cole 
and D. H. Reid (1 plate)_ 285 
Polyscelis modestus Gahan, a Minor Parasite of the Hessian Fly. P. R. 
Myers (2 text figures)_ 289 
Longevity and Fecundity of Bruchus quadrimaculatus Fab. as Influenced 
by Different Foods. A. O. Larson and C. K. Fisher_ 297 
A Dominant Lethal Chlorophyll Mutation in Maize. J. H. Kempton_ 307 
The Rate of Growth of Green and Albino Maize Seedlings. J. H. Kemp¬ 
ton (1 text figure)_ 311 
Critical Tests of Miscellaneous Anthelmintics. Maurice C. Hall and 
Jacob E. Shillinger_ 313 
iii 
